I am trying to install Moodle and everything seems fine but then when it comes to Admin user creation process, it seems as there is no CSS file, and "update profile" button does not perform any action. So I am stuck on page moodle/user/editadvanced.php?id=2

I have also attached the screenshot of the website.

I have already tried every possible way I could such as changing permission to 777, or with root user, Nginx user, and owner of that directory. But it remains the same after every installation.

I have already searched for this problem but couldn't find a solution. I am following a tutorial on HowToForge to install Moodle.